@rex-screen : 640;
@rem : @rex-screen/10rem;
@sreen : 540px;
@content : 1200px;

@red-dark : darken(@red,3%);
@red: #bf2b39;
@red-light : lighten(@red,3%);

.animate-delay(@speed){
  animte-delay:@speed;
  -webkit-animation-delay: @speed;
}

.border-half-bottom(@color){
    position: relative;
    &:before{
        position: absolute;content: '';width: 100%;left: 0;bottom: 0;height: 1px;transform: scale(1,0.5);transform-origin: center bottom;border-bottom: 1px solid @color;
    }
}